In this example (Windows 7) you opened a chrome session in full screen that opens your defined URL and avoid the user to access other URL
If you want to execute 2 sessions you must create a temporary datastorage in the second launched process

Checker Gateway and Server

Checker is a security application designed for financial self-service networks. It allows you to provide a highly secure environment in automated teller machines and can be managed simply from a centralized location.
Checker provides an administration web interface that allows you to perform all of the tasks needed to administer security and monitor the events occurring in the ATMs.

In order to correctly install Checker, you must install the essential components:

Checker Server: this component is in charge of centralizing the administration of the Checker environment. It must be installed in a highly available environment with access to the ATM network.

Checker Gateway: this component is in charge of connecting all Checker Agents with the server. It’s a communication middleware.

Checker Agent: the application in charge of protecting the ATM which must be installed in each ATM to be protected.

Checker Server is a Java application and must be executed in the context of a J2EE application server. It also requires the existence of an Oracle 9i/10g/11g, DB2 UDB 8/9, SQL Server 2005/2008 or MySQL 5 database. This installation guide offers detailed instructions on how to create the data model in Oracle and DB2.
Checker Agent is a Windows application which means that the operating system installed in the ATM must be Windows XP or Windows NT 4.

PREREQUISITES

For Checker Server:

Operating system: anyone, as long as it can fulfill the next requisites.